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    • 41. 发明授权
    • Technique for efficient spectrum utilization in mobile radio systems
using space diversity
    • 使用空间多样性的移动无线电系统中有效频谱利用的技术
    • US4355411A
    • 1982-10-19
    • US276255
    • 1981-06-22
    • Douglas O. ReudinkYu S. Yeh
    • Douglas O. ReudinkYu S. Yeh
    • H04B7/26H04W16/02H04W16/06H04W16/12H04W16/24H04B3/60H04B7/06H04B15/00
    • H04W16/12H04B7/2621H04W16/02H04W16/06H04W16/24
    • The present invention relates to a technique for efficient spectrum utilization in mobile radio systems divided into a plurality of geometrically-shaped cells (10-21). Mobiles (24) in each cell are served by at least one base station (30-40) comprising a directional antenna having a beamwidth corresponding to the overall area of the associated cell. Each base station communicates with mobiles within the associated cell using separate primary channels (C.sub.p) within a first portion of the system frequency spectrum when a mobile is not experiencing interference above a predetermined interference level, and switches a mobile to a separate secondary channel (C.sub.p) within a selected section (f.sub.1, f.sub.2, f.sub.3) of the remaining second portion (f.sub.i) of the system frequency spectrum when the interference at a mobile exceeds the predetermined interference level. Each selected section used in adjacent portions of adjacent cells being within a different frequency subband of the second portion.
    • 本发明涉及一种分为多个几何形状的小区(10-21)的移动无线电系统中有效频谱利用的技术。 每个小区中的移动台(24)由至少一个基站(30-40)服务,所述基站(30-40)包括具有对应于相关小区的总面积的波束宽度的定向天线。 当移动站没有经历高于预定干扰电平的干扰时,每个基站在系统频谱的第一部分内使用分离的主要信道(Cp)与相关小区内的移动台进行通信,并将移动台切换到单独的辅助信道(Cp )在移动台处的干扰超过预定干扰电平时系统频谱的剩余第二部分(fi)的选定部分(f1,f2,f3)内。 在相邻小区的相邻部分中使用的每个选择的部分在第二部分的不同的频率子带内。
    • 42. 发明授权
    • Method and apparatus for effecting communication with receivers disposed
in blackout regions formed by concurrently transmitted overlapping
global and spot beams
    • 用于与设置在同时传输的重叠全局和点光束形成的遮光区域中的接收器进行通信的方法和装置
    • US4163942A
    • 1979-08-07
    • US842416
    • 1977-10-17
    • Anthony AcamporaDouglas O. ReudinkYu S. Yeh
    • Anthony AcamporaDouglas O. ReudinkYu S. Yeh
    • H04B7/204H04B15/00H04B1/00
    • H04B7/2041
    • The present invention relates to method and apparatus for communicating with one or more receiver stations disposed within a blackout region located in the vicinity of and surrounding each spot beam coverage area, the blackout region being caused by interference between concurrently transmitted and overlapping global coverage and spot coverage antenna radiated beams using the same frequency band despite the application of global beam interference suppression techniques at the spot beam receiving areas. Access to the receiver stations within each blackout region is provided by selectively turning off the associated interfering spot beam during a predetermined interval of time while ensuring that the power level of the radiated global coverage beam is not suppressed within the accessed blackout region to permit the global coverage beam to communicate with these receiver stations.
    • 本发明涉及一种用于与设置在位于每个点波束覆盖区域附近并围绕每个点波束覆盖区域的停电区域内的一个或多个接收站通信的方法和装置,所述停电区域由同时发送和重叠的全局覆盖之间的干扰和点 使用相同频带的覆盖天线辐射波束,尽管在点波束接收区域应用全局波束干扰抑制技术。 通过在预定的时间间隔期间选择性地关闭相关联的干扰点波束来提供对每个停电区域内的接收站的访问,同时确保辐射的全局覆盖波束的功率电平在所访问的遮断区域内不被抑制,以允许全局 覆盖波束与这些接收站通信。
    • 43. 发明授权
    • Ordered list channel assignments
    • 有序的列表通道分配
    • US08897796B2
    • 2014-11-25
    • US13197151
    • 2011-08-03
    • Douglas O. Reudink
    • Douglas O. Reudink
    • H04B7/00H04B15/00H04B17/00H04W4/00H04W40/00H04W72/00H04W74/00H04W16/10H04W72/08
    • H04W72/082H04J11/003H04J11/0056H04L5/0007H04L5/0073H04W16/10H04W72/08H04W72/085
    • There is disclosed a system and method for improving wireless system capacity by reducing collisions where the Signal to Interference Ratio (SIR) is high in systems having a channel reuse of 1. By ordering the channel assignment in each of the interfering cells according to a pattern, for example, according to the distance from a base station (determined by power levels), the mobile stations will become paired on the same channel in a manner to reduce interference between them. In one embodiment, this intelligent assignment is accomplished by assigning mobile stations in one cell such that the mobile station having the strongest signal is assigned channel A while in the interfering cell the mobile station with the weakest signal is assigned to channel A. In another embodiment, certain preferred mobile stations are assigned either interference-free channels or channels paired with weak interference mobile stations.
    • 公开了一种通过减少在信道重用为1的系统中信号干扰比(SIR)高的冲突来改善无线系统容量的系统和方法。通过根据模式排序每个干扰小区中的信道分配 例如,根据与基站的距离(由功率电平确定),移动台将以相同的信道成为配对,以减少它们之间的干扰。 在一个实施例中,这种智能分配通过在一个小区中分配移动站来实现,使得具有最强信号的移动站被分配信道A,而在干扰小区中具有最弱信号的移动站被分配给信道A.在另一个实施例中 ,某些优选的移动台被分配无干扰信道或与弱干扰移动站配对的信道。
    • 45. 发明授权
    • Planar antenna array with parasitic elements providing multiple beams of varying widths
    • 具有寄生元件的平面天线阵列,提供多个不同宽度的波束
    • US06317100B1
    • 2001-11-13
    • US09351276
    • 1999-07-12
    • J. Todd ElsonRay K. ButlerDouglas O. ReudinkTodd Achilles
    • J. Todd ElsonRay K. ButlerDouglas O. ReudinkTodd Achilles
    • H01Q2100
    • H01Q21/22
    • An antenna system adapted to provide antenna beams having various characteristics, such as various beam widths and/or different orientations, is disclosed. In a preferred embodiment, the antenna system is adapted to provide forward link signals in wide antenna beams while providing reverse link signals in narrow antenna beams. In the preferred embodiment multiple forward link wide beams are provided to allow uniform radiation of forward link signals throughout a desired area, such as a sector of a cell, while multiple non-overlapping narrow antenna beams are provided in the reverse link. In the preferred embodiment passive or parasitic antenna elements are utilized in the antenna array to provide symmetric current distribution in the antenna array to provide multiple beams having uniform characteristics.
    • 公开了一种适于提供具有各种特性(例如各种波束宽度和/或不同取向)的天线波束的天线系统。 在优选实施例中,天线系统适于在宽天线波束中提供前向链路信号,同时在窄天线波束中提供反向链路信号。 在优选实施例中,提供多个前向链路宽波束以允许前向链路信号在整个期望的区域(诸如小区的扇区)的均匀辐射,而在反向链路中提供多个不重叠的窄天线波束。 在优选实施例中,无源或寄生天线元件用于天线阵列中以在天线阵列中提供对称电流分布,以提供具有均匀特性的多个波束。
    • 47. 发明授权
    • Narrow beam antenna systems with angular diversity
    • 具有角度分集的窄波束天线系统
    • US5648968A
    • 1997-07-15
    • US520316
    • 1995-08-28
    • Douglas O. Reudink
    • Douglas O. Reudink
    • H01Q3/22H01Q3/26H01Q3/40H01Q21/28H01Q25/00H04J13/00
    • H01Q25/00H01Q21/28H01Q3/22H01Q3/2682H01Q3/40
    • A transmitting system (80) is disclosed which includes several antennas (801-803) providing a plurality of antenna beams. The transmit signal from transmitter 81 is sent to the plurality of antennas via routing circuitry (82). The transmit signal is divided into two or more identical signals, each delayed by a selected amount. The particular antenna to which the undelayed signal, the first delayed signal and each other delayed signal is sent is selected for any instant depending on control signals provided by control (83). Control (83), in turn, could operate from a number of factors, one being the relative strengths of the received signals at each of the antennas for that particular channel. The amount of delay could, if desired, also be controlled by control (83).
    • 公开了包括提供多个天线波束的几个天线(801-803)的发射系统(80)。 来自发射机81的发射信号通过路由电路(82)发送到多个天线。 发送信号被分成两个或更多个相同的信号,每个延迟一个选定的量。 根据由控制(83)提供的控制信号,任意时刻选择发送未延迟信号,第一延迟信号和每个其它延迟信号的特定天线。 控制(83)又可以由若干因素操作,一个是针对该特定信道的每个天线处的接收信号的相对强度。 如果需要,延迟量也可以通过控制来控制(83)。
    • 48. 发明授权
    • Multi-channel signal transmission
    • 多声道信号传输
    • US4891840A
    • 1990-01-02
    • US837798
    • 1986-03-10
    • Douglas O. Reudink
    • Douglas O. Reudink
    • H04B1/66
    • H04B1/667
    • A system for communicating a wide band signal across a plurlaity of narrow band channels by separating the wide band signal into two or more narrower sub-bands and modulating the developed narrower sub-bands down to baseband. The baseband channels are algebraically combined to form unique combination signals, and the combination signals are transmitted over the narrowband channels. On the receiving end, the combination signals are algebraically combined to recreate the original baseband channels. The channels are modulated up to their original frequency bands, and arithmetically combined to recreate the desired broadband signal.
    • 一种用于通过将宽带信号分离成两个或更多个较窄子带并将显影的较窄子带调制到基带的方式,在窄带信道的多个频带上传送宽带信号的系统。 基带信道被代数组合以形成唯一的组合信号,并且组合信号通过窄带信道传输。 在接收端,组合信号被代数组合以重建原始基带信道。 信道被调制到其原始频带,并且算术组合以重现所需的宽带信号。
    • 49. 发明授权
    • Technique for digital split-channel transmission using interpolative
coders and decoders
    • 使用内插编码器和解码器的数字分频信道传输技术
    • US4498173A
    • 1985-02-05
    • US389448
    • 1982-06-17
    • Douglas O. Reudink
    • Douglas O. Reudink
    • H04B1/74H04B14/04H04L1/02H04B7/06
    • H04B1/74H04B14/04H04L1/02
    • The present invention relates to a technique using interpolative coders and decoders to permit an analog input message signal to be sampled at the Nyquist rate, each sample is then encoded into a corresponding level of an X-bit code and the encoded corresponding level is then encoded into a unique corresponding digital number pair. Each digital number pair includes two separate digital signals comprising Y bits each for transmission over two separate channels or paths to a remote receiver for inverse decoding. In accordance with the present technique either half of the transmitted signal can be used to reproduce the original signal to a fair degree of accuracy and both halves can provide high-quality reproduction of the original signal.
    • 本发明涉及一种使用内插编码器和解码器来允许以奈奎斯特速率对模拟输入消息信号进行采样的技术,然后将每个样本编码为X位代码的对应级别,然后编码的对应级别被编码 成为独一无二的对应数字数字对。 每个数字数字对包括两个单独的数字信号,每个数字信号包括Y位,每个位用于在两个单独的信道上传输,或者到达远程接收机的路径进行逆解码。 根据本技术,传输信号的一半可以用于以相当程度的精度再现原始信号,并且两者可以提供原始信号的高质量再现。